Interspecific Hybridization in Nicotiana. X. Haploid and Diploid Merogony

Abstract
In F1 of N. digluta [female] X N. tabacum [male], a single haploid tabacum plant was secured in a population of 173 individuals. It is suggested that the occasional pure sylvestris plants obtained in backcrosses of F1 sylveslris-tabacum [female] X sylvestris [male] may arise from diploid merogony. No influence of maternal cytoplasm was discernible in the above described instances.